At this website, the Environmental Protection Agency (EPA) educates children about the United States' largest source of water contamination - non-point source pollution. Students can learn how they can prevent non-point source pollution in their homes and when taking part in recreational activities. Users can find a variety of educational games and activities such as developing a rain gauge. The website offers basic information on stream morphology, water quality, surface runoff, and more. Users can learn how to take part in the adopt-a-stream program where they can become Streamkeepers.